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How to determine the torque accuracy in tightening operations

April 25, 2024

In industrial production, tightening operation is one of the common assembly processes, and torque accuracy is a key factor in ensuring assembly quality and product performance. How to determine the torque accuracy in tightening operations?


Firstly, we need to clarify the concept of torque. Torque is the product of force and arm of force, representing the moment of rotation of an object. In tightening operations, torque refers to the torque applied to a bolt or nut to tightly bond it with another component. Therefore, torque accuracy refers to the accuracy and stability of the torque applied to the bolt or nut.


There are several methods to determine torque accuracy:


1. Determine torque range according to product requirements
Different products have different requirements for tightening torque, so it is necessary to first refer to the product manual or design requirements to understand the required torque range. After determining the torque range, suitable tightening tools and equipment can be selected according to the actual situation to ensure that the applied torque is within the required range.


2. Using torque control equipment
Torque control equipment is one of the key tools to ensure torque accuracy. Common torque control equipment includes torque wrenches, torque meters, torque sensors, etc. These devices can monitor the applied torque in real-time and issue alarms or automatically stop tightening operations when it exceeds the set range, ensuring torque accuracy.


3. Perform torque testing
During the production process, torque testing can be conducted regularly on tightening operations to verify whether the applied torque meets the requirements. Testing can use specialized testing equipment, such as torque testers, torque measuring instruments, etc. Through testing, problems can be identified in a timely manner and corresponding measures can be taken to ensure torque accuracy.


4. Train operators
Operators are the executors of tightening operations, and their skills and experience have a significant impact on torque accuracy. Therefore, it is necessary to provide professional training for operators to improve their skill level and awareness. The training content can include tightening principles, usage methods of torque control equipment, torque testing methods, etc.


5. Strengthen process control
During the tightening process, process control should be strengthened to ensure that each step meets the specified requirements. For example, detailed work instructions can be developed to clarify parameters such as tightening sequence, tightening torque, tightening speed, etc; Regular maintenance and inspection of tightening tools and equipment to ensure their accuracy and reliability; Supervise and inspect tightening operations, promptly identify problems and take measures.


6. Consider environmental factors
Environmental factors may also have an impact on torque accuracy. For example, factors such as temperature, humidity, and vibration can all affect the tightening effect of bolts or nuts. Therefore, the impact of these factors should be considered in the production process, and corresponding measures should be taken to control and compensate.


In summary, determining the torque accuracy in tightening operations requires starting from multiple aspects, including product requirements, torque control equipment, torque testing, operator training, process control, and environmental factors. Only by effectively controlling and managing these aspects can we ensure that the torque accuracy of the tightening operation meets the requirements, thereby ensuring the quality and performance of the product.